Across
- 4. large clouds of gas and space dust
- 5. the distance light travels in one year
- 6. dark patches on the sun's surface cause by the sun's magnetic field
- 8. the explosion of a star
- 11. the sun's visible surface
- 12. the actual brightness of a star
- 13. groups of two stars that circle around each other
Down
- 1. a group of stars which seems to outline the shape of a person, animal, or something else
- 2. the brightest star in the night sky
- 3. the hottest region of the sun
- 7. the pole star
- 9. the closest star to the Earth besides the sun
- 10. a haze of very hot gasses around the sun